Abū al-Faraj Muḥammad ibn Isḥāq an-Nadīm (Arabic: ابو الفرج محمد بن إسحاق النديم), also Ibn Abī Yaʿqūb Isḥāq ibn Muḥammad ibn Isḥāq al-Warrāq, and commonly known by the nasab (patronymic) Ibn an-Nadīm (Arabic: ابن النديم; died 17 September 995 or 998), was a Muslim bibliographer and biographer of Baghdad who compiled the encyclopedia Kitāb al-Fihrist (The Book Catalogue). Source: Wikipedia (en)